Study on the normalization of spatio-temporal database
Wan Jing · Information technology newsletter · 2009
The purpose of a good spatio-temporal database logical design is to eliminate data redundancy and insertion,deletion and update anomalies.In this paper,the notions of spatio-temporal function dependency,spatio-temporal key,spatio-temporal fully function dependency are introduced.Based on that,the normalization of spatio-temporal database is studied.The concepts of the first spatio-temporal normal form(ST1NF),the second spatio-temporal normal form(ST2NF) and the third spatio-temporal normal form(ST3NF) are introduced.The proofs of their normalization degree are given.